Convertible core for building-blocks.



J. W. P. REID. OONVERIIBLE CORE FOR BUILDING BLOCKS. PPPPPPPPPPPPPPPPP Ali-15. 1910f Patented Apr. 25, 1911.

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J. W P. REID. CONVERTIBLE CORE FOR BU-ILDING BLOGKS. APPLIOATION FILED MAR.15 1910.,

2 SHEETS-SHEET 2 Patented Apr.25, 1911.

UNITED s'rA'rns PATENT OFFICE.

JOHN W.- P. REID, 0F ZANESVILLE, OHIO.

I CONVERTIBLE CORE FOR BUILDING-BLOCKS.

Specification of Letters Patent.

Patented Apr. 25. 1911.

Application filed March 15, 1910. Serial No. 549,499.

To all whom it may concern:

The main object of the present invention is the provision of a core made up of spaced sections, and the formation of such sections on their adjacent edges to permit the application of independent and distinct spaced closing members, whereby the core may be used in the formation of the ordinary hollow building block, the partition building block, and the bridge building block.

The invention in the preferred embodiment of details wilLbe described in the following specification, reference being had particularly to the accompanying drawings, in which Figure 1 is a perspective view of the improved core with the parts arranged for use in forming the bridge building-block. Fig. 2 is a perspective, partly broken out, of the block formed with the core when the parts are arranged as shown in Fig. 1. Fig. 3 is a perspective view of the core with the parts arranged for forming a hollow building block. Fig. 4 is a perspective view partly broken out, of the building block constructed in the use of the, core shown in I ig. Fig. 5 is a perspective view of the core with the parts arranged for forming a partition building block. Fig. 6 is a perspective view of the block constructed in the use of the coreshown in Fig. -5. Fig. 7 is a perspective View of the bridge-forming section for use with the core. i

Referring particularly to the accompanying drawings, it wilhbe noted that the improved core comprises sections 1 and 2, secured in spaced relation and fixed with respect to each other through the medium of tie rods 3 and 4 which preferably extend entirely through the respective sections and are secured beyond the relatively outer surface of the latter by nuts 5 or the like. The sections are secured in spaced relation with TV. P. Run), a l

their adjacent surfaces preferably parallel, positioning nuts 6 being arranged upon the tie rods to engage such surfaces of the sections and prevent independent movement of the sections. If desired, the tie rods may be threaded for a considerable portion of their :lengths to permit such adjustment of the nuts (3 on the rods as will provide for arranging the adjacent surfaces of the sections 1. and 2 at any desireddistance from each other.

For convenience in illustration, the sections 1 and 2 are shown as ofplain rectangular outline, though it is to be understood that said sections may, if desired, be of hollow construction or of any preferred configuration in outline.

The adjacent surfaces of therespective sections are formed to receive what will be hereinafter termed space-closing members, which members are designed to bridge the space between the sections. The memberengaging surface of each section is formed near eachvertical face or edge with a groove, as 7 and 8, and near the top edge with a similar groove 9, the upper ends of the grooves 7 and 8 opening into the groove 9, as will be clear from Fig. 5.

The space bridging members are designed to be of various types,'thos e shown including a plate member as 10 and a bridge-forming member as 11; The plate members are. rectangular plate-like sections formed on their edges with tenons 12 to seat in the grooves 7, 8 or 9 of the respective sections 1 and 2. The plate members are, when in place designed to bridge the space between thesections and of such thickness that their outer surfaces will aline with the particular similar surfaces of the sections adjacent. which the members are arranged. The bridge member 11 is preferably a semi-circular section with its side walls 13 projected in parallel relation and formedwith tenons or strips 14 to engage the grooves in the core. sections 1 and 2.

In the arrangement of the parts for the formation of what. is known as the bridge block. the bridge-forming element 11 is arranged between the sections 1 and 2 with the tenons 1a ei'igaging the grooves 9 of the sections. The plate members 10 are then applied in the grooves 7 and 8, closing the space between the sections Land 2 above the member 11.- For particular cooperation with the bridge-forming element, the plate memx the block illustrated in bers 10 are formed at their upper edges with rounded depressions 15 to snugly fit beneath that portion of the bridge-forining element arranged between the sections. The core when used in the ordinary way, after such arrangement of parts, will form Fig. 2, wherein a solid bridge 16, formed by the hollow bridge-forming element 11, joins the side walls 17 of the block.

y In the use of the core to form a straight hollow block, the space between the sections 1 and 2 is closed by the plate members 10,

three of such members being used, as shown in Fig. 3. \Vith the core parts thus con-' structed, a block similar to that shown in Fig. 4 is formed, wherein the space included between the walls 18 is entirely uninterrupted.

in the arrangement of the parts of the core for forming what is known as the partition block, all of the closing elements are removed, and thesections l and 2 remain spaced throughout their full area. The block resulting from the use of the core in this form is illustrated in Fig. 6, and will be provided with a partition 19 of the full height of and bridging the space between the walls 20.

It is of course to be understood that if desired various other configurations of space closing elements may be used, and that the illustration and description of such elements herein is designed to indicate gener- 7 ally such space closing parts, and is not intended to limit the invention to the specific details of such parts as shown.

The core is designed to be constructed of any suitable material and in any size which I ing said sections may adapt it for any particular use, the salient feature of the invention residing in the provision of a core whereby various types of building blocks may be readily and conveniently formed by the use of simple ad ditional elements to the main body of the core.

Having thus described my invention, what I claim as new,'is:

1. A mold core for use with molding machines, including mold sections, means cooperating with said sections beyond the material engaging portions thereof for securwith their proximate surfaces in spaced relation throughout,- the proximate surfaces of said sections being each formed adjacent their side edges and top edge with grooves to receive closing elements for changing the molding contour of the core as an entirety.

2. A mold core for use with molding machines, includingmold sections, tie-rods removably engaging the sections beyond the material engaging portions thereof for securing said sections with their proximate surfaces in spaced relation, the proximate surfaces of the sections being formed adjacent their side edges and top edge with openend grooves, and space closing sections adapted to slidably engage either or all of said grooves tochange the molding contour of the core without'varying the normal external dimensions of said core.

In testimony whereof, I afiix my signature in presence of two witnesses.

JOHN WV. P. REID.

\Vitnesses l'hnmn'r E. MEYER, HARVEY C. SMITH.

Copies of this patent may be obtained for five cents eachfby addressing the Commissioner of Patents. Washington, D. C. 

